考虑机组同调性的风电场无功协调控制  

A Coordinated Reactive Power Control Strategy for Wind Farm Considering Coherence of Generating Units

作　　者：丁明[1] 张宏艳[1] 韩平平[1] 朱乾龙[1] 张晓安[1] 贺敬[2] 

机构地区：[1]教育部光伏系统工程研究中心(合肥工业大学),安徽省合肥市230009 [2]中国电力科学研究院,北京市海淀区100192

出　　处：《电网技术》2014年第12期3390-3395,共6页Power System Technology

基　　金：国家自然科学基金项目(51207039);国家能源应用技术研究工程示范项目(NY20110408-2);国家电网公司科技项目(NY17201200073)~~

摘　　要：针对具有无功调节能力的双馈感应发电机(double-fed induction generator,DFIG)组成的风电场,提出了一种基于同调分群的无功协调控制策略。该策略充分考虑风电场内风电机组的差异性与同调性,在对风电场进行同调机群划分后,对不同特性的机群分别采用不同的无功控制策略,并采用一种风电场稳定系数指标来综合评价电网电压稳定和无功裕度。仿真算例结果表明,所提出的协调控制策略能有效支持电网电压,还具有相对较大的无功裕度来满足电网无功需求。For the wind farm composed of double-fed induction generators （DFIG） with reactive power regulation capability a coherent clustering based coordinated reactive power control strategy is proposed. In the proposed control strategy the otherness and coherence of wind power generating units are adequately considered, and after the division of coherent clustering of generating units in the wind farm different reactive power control strategy is applied to unit clustering with different characteristics and a wind farm stability coefficient is adopted to synthetically evaluate the voltage stability and reactive power margin of power grid. Taking a wind farm composed of 36 DFIG as the case, simulation results show that the proposed control strategy can effectively support grid voltage and there exists a relatively large reactive power margin to meet the reactive power requirement of power grid.

关 键 词：风电场 双馈感应发电机 同调性 无功协调控制 

分 类 号：TM76[电气工程—电力系统及自动化]